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Mud silt blocking method for dilute debris flow and high-sandiness floods and uses thereof

A technology for debris flow and sediment, which can be used in excavation, hydraulic engineering, climate change adaptation, etc., and can solve problems such as inability to meet sediment control.

Inactive Publication Date: 2008-09-24
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main idea of ​​the current debris flow prevention and control technology is to block large particles, excrete fine particles and water bodies, which cannot meet the needs of sediment control

Method used

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  • Mud silt blocking method for dilute debris flow and high-sandiness floods and uses thereof
  • Mud silt blocking method for dilute debris flow and high-sandiness floods and uses thereof
  • Mud silt blocking method for dilute debris flow and high-sandiness floods and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 shown. For a watershed area of ​​1.0km 2 , The vegetation coverage rate is 40%, the slope of the accumulation fan is 15%, and the clay content in the accumulation particles on the accumulation fan is 4% in the debris flow area. Fine-grained matter from dilute debris flows and sediment from high-sediment floods. Several lead wire cage bed dams 1 for stabilizing the quality of the main ditch bed are provided in the main ditch bed 6, and the main ditch bed 6 is fixed in sections. In the upstream of the main ditch bed 6, there is a gravity drainage valley square 2 for drainage, and on the side of the main ditch bed 6 downstream of the gravity drainage valley square 2, there are two parallel to the main ditch bed 6 and along the main ditch. The lead wire cage grit chamber 3 connected in series with the drainage ditch 4 in the direction of the bed 6; the gravity drainage valley 2 is connected w...

Embodiment 2

[0032] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 shown. For a watershed area of ​​2.0km 2, In the debris flow area where the vegetation coverage rate is 40%, the slope of the accumulation fan is 20%, and the clay content of the accumulated particles on the accumulation fan is 6%, two backbone sand check dams with an effective dam height of 7m are installed on the top of the accumulation fan. At the same time, use the following sediment retention method on the main ditch bed to intercept the fine particles of dilute debris flow and the sediment of high-sediment flood. Several lead wire cage bed dams 1 for stabilizing the quality of the main ditch bed are provided in the main ditch bed 6, and the main ditch bed 6 is fixed in sections. In the upstream of the main ditch bed 6, there is a gravity drainage valley square 2 for drainage, and on the side of the main ditch bed 6 downstream of the gravity type drainage valley square 2, there are 3 ...

Embodiment 3

[0035] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 shown. The same place as in Embodiment 1 will not be described again, and the difference is that:

[0036] The drainage area is 0.8km 2 , The slope of the accumulation fan is 10%. The depth of the lead wire cages embedded in the lead wire cage bed dam 1 on both sides of the main ditch bed 6 is 0.5m; the distance between the lead wire cage bed dams 1 is 15.0m, and the size of the lead wire cages in the lead wire cage bed dam 1 is 2.0 m×0.5m×0.5m. The quantity of the lead wire cage grit chamber 3 is one, the size is 4.0m×10.0m, and the depth is 2.0m. The foundation of gravity drainage Gufang 2 is buried at a depth of 1.0m, the foundation is a concrete structure, the effective height of the dam body is 1.5m, the width of the dam crest is 0.4m, the slope of the downstream side of the dam body is 1:0.05, and the slope of the upstream side is 1:0. 0.4, the dam structure is concrete.

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Abstract

The invention discloses a sediment desilting method of turbulent debris flow and flood with hyperconcentration and application thereof. The sediment desilting method includes arranging a plurality of wire box bed reinforcing dams in a main gully bed to stabilize the main gully bed mass for fixing the main gully bed in sections; the upstream of the main gully bed is provided with a gravity drainage check dam used for drainage; the side part of the main gully bed at the downstream of the gravity drainage check dam is provided with a wire box sand depositing pool; the gravity drainage check dam and the wire box sand depositing pool are connected through a drain; the wire box sand depositing pool and the main gully bed are connected through a flood discharge pipe to drain the clean water through the sand deposition treatment of the wire box sand depositing pool to the main gully bed. Compared with the prior art, the invention can effectively desilt the thin particle matters of the turbulent debris flow and the sediment of the flood with hyperconcentration and avoids the sediment from silting the reservoirs in the downstream, the lakes in beauty spots as well as silting the farmlands and cities. The sediment deposited in the wire box sand depositing pool can be utilized for the area lack of construction sand.

Description

technical field [0001] The invention relates to a mud-rock flow prevention technology, in particular to a mud-sand silting method based on bed-fixing-sedimentation dilute mud-rock flow and high-sediment flood and its application. Background technique [0002] China is a country prone to geological disasters. There are many types of disasters, wide distribution, and great harm. In particular, mud-rock flow disasters are widely distributed, which restricts the development of the national economy in the vast mountainous areas of the country and threatens the safety of people's lives and property. [0003] In addition to causing a large number of casualties and destroying roads, towns, industrial mines, farmland and hydropower projects, debris flows also transport a large amount of sediment, resulting in river siltation and frequent flooding in mountainous areas, hindering river navigation and silting reservoirs, affecting the service life and functions of hydropower projects pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/00E02B1/00E02D17/20E01F7/00
CPCY02A50/00
Inventor 陈晓清崔鹏游勇李德基
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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